Two piece interlocking block system

ABSTRACT

An interlocking block system consisting of a full block and a half block are installed mortar free with the internal cells filled with grout as required. The blocks must be laid in the upright position but may be rotated end to end as required for aesthetic reasons or to create an additional square internal cell. The blocks are supported by a tongue and groove engagement at the four external corners and four internal locking members that engage within the block on the course above. Knockout sections and relief areas are supplied for the installation of reinforcing bars. When the blocks are turned at a ninety degree angle to make a corner, the internal locking members engage in the square end cell of the block above equally as well as they do in a straight course of blocks.

The present invention claims priority to U.S. Provisional PatentApplication No. 60/637,298, filed Dec. 17, 2004. It relates to buildingblocks, which are conventionally employed to construct a variety ofstructures. More particularly the device herein disclosed relates to abuilding block system that employs only two configurations of blocks tobuild an extremely strong and stable structure. Two configurations willbe available in a variety of common block sizes. The system employing afull block and a half block uses a novel means of interlocking externaltongues and grooves along with internal locking members to provide anincredibly strong sheer resistant structure. The two-piece interlockingblock system works as effectively on corners as it does on straightsections. With the addition of optional reinforcing bars and groutfilled cells, the resulting wall provides resistance to earthquakes andother lateral forces which might cause failure in walls lacking thestructural integrity provided by the interlocking system of thedisclosed device herein referred to as the Haener two piece interlockingblock system.

FIELD OF THE INVENTION Background of the Invention

The present invention generally relates to construction materials and,more particularly, to a mortar free block of an improved type.Conventional concrete block walls are laid up by a time-consumingdifficult system that involves concrete mortar being placed onto thefooting or the top of a course of previously laid blocks and thensetting blocks one at a time in the mortar. In each instance the masonapplies mortar to the end wall of block to join them together end toend.

This procedure is continued until the required courses are in place.Great care must be taken to keep each course perfectly horizontal andstraight and the spacing between blocks even with additional timerequired in the finishing of the mortar joints on both sides of the wallsurfaces. It takes a skilled block mason with years of experience to layblock properly with even spacing end to end and between courses. The useof a great deal of skilled laborers on a jobsite keeps the cost of thistype of construction high.

Various types of interlocking blocks have been devised in the past tofacilitate block laying; however, most such blocks are very expensive toproduce since the interlocking portions, usually grooves andprotrusions, normally are sawed into or otherwise fashioned in theblocks after they are initially formed by the molding process. Some ofthe interlocking blocks require a wide variety of different shapes ofblocks to accomplish the tasks and are usually very fragile and subjectto breakage. Moreover, those blocks in which the interlocking componentsare initially molded usually are difficult to mold with the acceptablyclose tolerances that are required.

Accordingly, it would be desirable to be able to provide an improvedmortar free building block featuring improved adaptability, strength andeconomy. The design of the block should be such that it can be readilymolded and released from the forming mold with the full detailpreserved, obviating any subsequent reshaping and finishing. Moreover,the block should be easily strengthened with reinforcing bars if needed,and should be capable of being fabricated in a full array of sizes, butstill having only two basic configurations.

REFERENCES SITED

U.S. Pat. No. 6,134,853 of Juan Haener describes an insulated buildingblock system for use in building walls and other structures. Each fullblock has sidewalls and end walls with a generally open interior andflat upper and lower surfaces. Two vertical ridges are provided alongthe interior of one sidewall, with a protrusion extending above theupper surface. The ridges are located such that an upper block arrangedin staggered relationship to a block in a lower course will interlockwith the lower block. Recesses are provided in the interior end wallsurfaces to retain a thermal insulation panel against the interiorsidewall surface opposite the ridges. Half blocks are also provided tofill spaces in wall end surfaces between staggered full blocks. The halfblocks have open interiors for placement of insulation panels andinclude ridges for interlocking with protrusions on adjacent fullblocks. First rebar ends extending up through lower courses filled withcement grout may be fastened to second rebar ends extending down throughupper courses and aligned with the first rebar by ways of a loop ofmaterial secured to the second rebar. The second rebar end with the loopis inserted through an opening in the upper courses until the loopsurrounds the extended end of the first rebar. Then the second rebar isrotated to wind the loop material around the second rebar, bringing theends of the first and second rebar together.

This patent, while a leader in its field, describes a mortar free blockthat was designed for its insulation capabilities having a singlecentral chamber in which foam insulation material can be inserted. Thisblock has the external tongue and groove end engagement but only has twointerlocking protrusions on one side of the block creating a block thatcannot be reversed and can only be used in one plane. With one centralchamber and no center wall, the block, while useful for the intendedpurpose, is rendered fragile and subject to inadvertent breakage.

U.S. Pat. No. 5,575,128 of Juan Haener teaches of an interlocking locksystem for mortar free wall or other structure assembly in which aplurality of blocks are laid up in courses in a staggered relationship.Only two different block configurations are required, the first, orlong, blocks having a length at least twice the block height and thesecond, or short, blocks having a length up to half the length of thefirst blocks. Each of the blocks has a pair of upright sidewalls havinga flat top and bottom surface and generally parallel outermost sidesurfaces and at least two spaced transverse walls. Protrusions on theinner surfaces of the sidewalls extend from a base generally coplanarwith the block bottom surface to a top extending above the block topsurface and configured so that the tops and bases interlock when theblocks are laid up in staggered courses. Further interlock arrangementsare provided so that the long blocks will interlock when positionedeither parallel along walls or perpendicular at corners. A tongue andgroove interlock configuration is provided at the ends of the blocks sothat the ends interlock.

This patent teaches of another mortar free block with a single centralchamber with external tongue and groove engagement with threeinterlocking protrusions. Blocks of this type with a single centralchamber are more fragile and subject to breakage during themanufacturing and shipping processes as well on the jobsite. Theinterlocking of the protrusions work well in a straight line but do notwork effectively on corners.

U.S. Pat. No. 5,711,129 of Michael E. Woolford discloses a compositemasonry block having a front surface and a back surface which areadjoined by first and second side surfaces, as well as a top surface anda bottom surface each lying adjacent to the front, back, and first andsecond side surfaces. Each of the side surfaces has an inset spanningfrom the block top surface to the block bottom surface. The block topsurface has one or more protrusions positioned adjacent to the first andsecond insets on the block top surface. The blocks have back legs thatare directed outwardly from the blocks back surface. The block back legsmay extend in a plane parallel to the block front surface or extendforwardly toward the blocks front surface. In use, the blocks may bestacked to provide an interlocking structure wherein the protrusions ofone block interfit within the insets of another block.

This patent discloses a composite masonry block that is designedspecifically to be used in landscaping and would not function in theconstruction of masonry walls on structures. They are constructed foreach coarse to step back from the preceding coarse for terracing andretaining walls.

U.S. Pat. No. 5,379,565 of Fabien Vienne additionally describes a blockto be laid without mortar comprised of six faces opposite two-by-two andof which at least one face is punched so as to form open internal cellsseparated by walls, characterized in that said block comprises ribs andgrooves which extend in parallel to the edges on at least two faces witha length at the most equal to the greatest dimension of said block aswell as a transversal channel of V-shaped cross-section disposedperpendicularly between the longitudinal edge and said rib on the upperface of said block.

This patent describes a mortar free block that is recessed on the sidesto interlock but has no internal means of interlocking and loses itsinterlocking capability on corners.

None of these previous efforts, however, provides the benefits attendantwith the present invention. The present invention achieves its intendedpurposes, objects and advantages over the prior art devices through anew, useful and unobvious combination of method steps and componentelements, with the use of a minimum number of functioning parts, at areasonable cost to manufacture, and by employing readily availablematerials.

In this respect, before explaining at least one embodiment of theinvention in detail it is to be understood that the invention is notlimited in its application to the details of construction and to thearrangement, of the components set forth in the following description orillustrated in the drawings. The invention is capable of otherembodiments and of being practiced and carried out in various ways.Also, it is to be understood that the phraseology and terminologyemployed herein are for the purpose of description and should not beregarded as limiting.

As such, those skilled in the art will appreciate that the conception,upon which this disclosure is based, may readily be utilized as a basisfor designing of other structures, methods and systems for carrying outthe several purposes of the present invention. It is important,therefore, that the claims be regarded as including such equivalentconstruction insofar as they do not depart from the spirit and scope ofthe present invention.

SUMMARY OF THE INVENTION

The invention is defined by the appended claims with the specificembodiments shown in the attached drawings. Briefly stated, the presentinvention contemplates a novel system of construction using two basicconfigurations of block, an interlocking full sized block and aninterlocking half sized block. As in all building blocks of this style,a variety of widths will be available. This system requires that theblocks must be laid in the upright position and cannot be invertedalthough they can be rotated end to end. In the preferred embodiment ofthe invention, the top edges of the full block will have a beveledsurface to give the appearance of a mortar joint. The bottom surface ofthe full interlocking block is flat and parallel to the top surface. Theflat end wall has an engagement tongue on one side edge and a receivergroove on the other side edge. A pair of knockout grooves are located onthe inner surface of the flat end wall. By hitting between the knockoutgrooves with a hammer, an upper section of the flat end wall may beremoved as a means to insert reinforcing bars. A center wall extendsbetween the two side walls forming the first cell into a squareconfiguration. Two internal locking members extend past the top flatsurface of the interlocking block within the first cell. Two knockoutgrooves are formed into the center wall for the optional removal of thesection for the insertion of a reinforcing bar. The open end wall isinset from the sidewall ends incorporating two internal locking membersand a relief area as a means to insert a reinforcing bar. The secondrectangular cell is created between the center wall and the open endwall. An engagement tongue is located along the end of one of theparallel sides with the receiver groove located along the end of theother parallel side so there is a dual tongue and groove engagementbetween two blocks even if one has been rotated one hundred and eightydegrees.

The Haener half interlocking block in the preferred embodiment of theinvention has the top edges having a beveled surface. The bottom surfaceof the half interlocking block is basically flat and parallel to the topsurface. The flat end wall has an engagement tongue on one of the sideedges and a receiver groove on the other. Internal locking members arelocated on the internal sides extending past the top surface. The oneside wall end has an engagement tongue and the other has a receivergroove that will mate with either end of the Haener interlocking fullblock when starting or terminating a coarse of blocks.

Rotating a block within a course, with the side wall ends abutting theside wall ends of a second block, provides a means where a single fullinterlocking block can be rotated within a course of blocks and thespacing between the interlocking members will remain the same as if theblocks were laid in line with no change to the structural integrity ofthe wall. By having a textured surface on one side and a smooth surfaceon the other side of the Haener interlocking full blocks and rotatingthe blocks as required, a pattern can be established on the surface ofthe structure.

The alternate embodiment of the Haener half interlocking block will nothave the beveled edges representing a simulated mortar joint, but willhave square edges on the blocks so that the wall structure will appearseamless.

With respect to the above description then, it is to be realized thatthe optimum dimensional relationships for the parts of the invention, toinclude variations in size, materials, shape, form, function and mannerof operation, assembly and use, are deemed readily apparent and obviousto one skilled in the art, and all equivalent relationships to thoseillustrated in the drawings and described in the specification areintended to be encompassed by the present invention. Therefore, theforegoing is considered as illustrative only of the principles of theinvention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly, all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention.

THE OBJECTS OF THE INVENTION

The object of this invention is to create a system that uses only twointerlocking block components.

Another object of this invention is to create a system of mortar freeinterlocking blocks.

Another object of this invention is to create a system of interlockingblocks that are not fragile and subject to breakage.

Another object of this invention is to create a system of interlockingblocks that have two separate cells and a third cell when two blocks areset end to end.

Another object of this invention is to create a system of interlockingblocks where three separate cells per block can be filled with grout ifdesired.

Another object of this invention is to create a system where one or moreblocks can be rotated end to end within a course without loosing thestructural integrity of the wall.

Another object of this invention is to create a full interlocking blockwith grooved knockouts or depressions to allow reinforcing bars to runthe full length of the structure.

Another object of this invention is to create a preferred embodiment ofthe interlocking block with a bevel on the upper side edges and a bevelon opposite sides of the ends creating an artificial mortar seam.

Another object of this invention is to create an alternate embodiment ofthe interlocking block without the bevel on the edges to create aseamless appearance to the wall structure.

Yet another object of this invention is to create an interlocking blockwith the end cell in a square configuration so as to have equal supportfrom the interlocking members either when the blocks are laid in line oron corners.

A further object of this invention is to create a system of interlockingblocks for creating structures that can be laid up by laborers under thedirection of a single block mason.

An even further object of the invention is to be able to create astronger block structure than the conventional block and mortar methodof construction.

A final object of this invention is to reduce the cost and time involvedto create block structures.

With respect to the above description, before explaining at least onepreferred embodiment of the invention in detail, it is to be understoodthat the invention is not limited in its application to the details ofconstruction and to the arrangement of the components or steps set forthin the following description or illustrated in the drawings. The variousapparatus and methods of the invention are capable of other embodimentsand of being practiced and carried out in various ways which will beobvious to those skilled in the art once they review this disclosure.Also, it is to be understood that the phraseology and terminologyemployed herein are for the purpose of description and should not beregarded as limiting.

As such, those skilled in the art will appreciate that the conceptionupon which this disclosure is based may readily be utilized as a basisfor designing of other devices, methods and systems for carrying out theseveral purposes of the present disclosed device. It is important,therefore, that the objects and claims be regarded as including suchequivalent construction and methodology insofar as they do not departfrom the spirit and scope of the present invention.

Further objectives of this invention will be brought out in thefollowing part of the specification, wherein detailed description is forthe purpose of fully disclosing the invention without placinglimitations thereon.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and form a part ofthis specification, illustrate embodiments of the invention and togetherwith the detailed description, serve to explain the principles of thisinvention.

FIG. 1 depicts a perspective view of the interlocking full block.

FIG. 2 depicts a perspective view of the interlocking half block.

FIG. 3 depicts a top plan view of two interlocking full blocks with theopen ends abutting.

FIG. 4 depicts a top plan view of the interlocking full block.

FIG. 5 depicts an end view of the open end of the interlocking fullblock.

FIG. 6 depicts an end view of the flat end of either the interlockingfull or half blocks.

FIG. 7 depicts a top plan view of the interlocking half block.

FIG. 8 depicts an end view of the open end of the interlocking halfblock.

FIG. 9 depicts a top plan view of a typical corner stack of interlockingfull or half blocks.

FIG. 10 depicts a typical side view of the interlocking full block.

FIG. 11 depicts a top plan view of the alternate embodiment of theinterlocking full block without the bevel on the upper side edges or theopposite sides of the ends.

FIG. 12 depicts a top plan view of the alternate embodiment of theinterlocking half block without the bevel on the upper side edges or theopposite sides of the ends.

For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description taken inconjunction with the accompanying drawings which are incorporated in andform a part of this specification, illustrate embodiments of theinvention and together with the description, serve to explain theprinciples of this invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring now to the drawings, wherein similar parts of the inventionare identified by like reference numerals, there is seen in FIG. 1 aperspective view of the Haener interlocking full block 10A with twoparallel rectangular sides 12 and 14. This system requires that theblocks must be laid in the upright position and cannot be invertedalthough they can be rotated end to end. In the preferred embodiment ofthe invention, the top edges 16 and 18 have a beveled surface 20. Thebottom surface 22 of the full interlocking block 10 is basically flatand parallel to the top surface 24. The flat end wall 26 has anengagement tongue 28 on one side edge 30 and a receiver groove 32 on theother side edge 34. A pair of knock out grooves 36 are located on theinner surface of the flat end wall 26. By hitting between the knockoutgrooves 36 with a hammer, an upper section 38 of the flat end wall 26may be removed as a means to insert reinforcing bars. A center wall 40extends between the two side walls 16 and 18 forming the first cell 42in a square configuration. Two internal locking members 44 and 46 extendpast the top flat surface 24 of the interlocking block 10A within thefirst cell 42. The internal surfaces 48, 50, 52 and 54 of the cell 42create a square cell, open at the top and bottom. Two knock out grooves38 are formed into the center wall 40 for the optional removal of thesection 56 for the insertion of a reinforcing bar. The open end wall 58is inset from the sidewall ends 60 and 62 incorporating two internallocking members 64 and 66 and a relief area 68 as a means to insert areinforcing bar. It must be understood at this time that the flat endwall 26, the center wall 40 and the open end wall 58 can all beconfigured with knockout grooves 36 or with relief areas 68 and stillfall within the scope of this patent. The second rectangular cell 70 iscreated between the center wall 40 and the open end wall 58 withinternal surfaces 72, 74, 76, and 78. An engagement tongue 80 is locatedalong the end 60 of the parallel side 12 with the receiver groove 82located along the end 62 of the parallel side 14.

FIG. 2 depicts a perspective view of the Haener half interlocking block100A with two parallel rectangular sides 112 and 114. In the preferredembodiment of the invention, the top edges 116 and 118 have a beveledsurface 120. The bottom surface 122 of the half interlocking block 100Ais basically flat and parallel to the top surface 124. The flat end wall126 has an engagement tongue 128 on the side edge 130 and a receivergroove 132 on the other side edge 134. Internal locking members 144 and146 are located on the internal sides 148 and 152 extending past the topsurface 124. The side wall end 160 has an engagement tongue 180 and theother side wall end 162 that has a receiver groove 182 that will matewith either end of the Haener interlocking full block 10A when startingor terminating a coarse of blocks.

By rotating a block within a course, with the side wall ends 60 and 62abutting the side wall ends 60 and 62 of a second block illustrated inFIG. 3 provides a means where a single full interlocking block 10A canbe rotated within a coarse of blocks, the spacing between theinterlocking members 44, 46, 64 and 66 will remain the same as if theblocks were laid in line with no change to the structural integrity ofthe wall. By having a textured surface on one side and a smooth surfaceon the other side of the Haener interlocking full blocks 10A androtating the blocks as required, a pattern can be established on thesurface of the structure. Tapered locater 86 visible in this view islocated on the internal surface 78 of the open end wall 58 and adaptedin width to engage between underlying interlocking members 44, 46, 64and 66 when the full blocks are stacked in a wall.

FIG. 4 depicts a top plan view of the Haener interlocking full block 10Aemphasizing the shape of the first square sell 42 where the space A isequal to the space B creating a means by which the Haener fullinterlocking block 10A can be rotated ninety degrees to form a cornerjoint. In the parallel alignment of the Haener interlocking full blocks10A the internal locking parallel pairs of members 44,46,64 and 66 makecontact with the cell internal surfaces 48,52,72 and 76. When the one ofthe interlocking full blocks 10A and 10B are rotated at a cornerinternal locking members 44 and 46 make contact with internal surfaces50 and 54 to maintain the same internal structural support at thecorners.

FIG. 5 depicts an end view of the open end of the Haener interlockingfull block 10A indicating the height C of the locking members 44,46,64and 66 above the top surface 24 of the Haener interlocking full blocks10A and 10B.

FIG. 6 depicts an end view of the flat end 126 of either the Haenerinterlocking full 10A or half blocks 100A with the half blocks 100Ashown having the parallel side 112 and the opposite parallel side 114.The flat end wall 126 has a receiver groove 132 on the side edge 134 andan engaging tongue 128 on the side edge 130. The interlocking members144 and 146 are illustrated extending past the top surface 124 that isparallel to the bottom surface 122.

FIG. 7 depicts a top plan view of the Haener interlocking half block100A with the flat end wall 126 extending between the parallel side wall112 and the parallel side wall 114. The interlocking members 144 and 146are in the same relative position to the flat end wall 126 as theinterlocking members 44 and 46 are to the flat end wall 26. Theinterlocking member 144 is located on the internal surface 148 and theinterlocking member 146 is located on the internal surface 152. At theopen end 156 of the Haener interlocking half block 100A, the side wallend 160 has an engaging tongue 180 while side wall end 162 has thereceiver groove 182.

FIG. 8 depicts an end view of the open end 156 of the Haenerinterlocking half block 100A.

FIG. 9 depicts a top plan view of a typical corner stack of Haenerinterlocking full block 10A where the first cell 42 of the lower blockaligns with the first cell 42 of the block above and the inter lockingmember is adjacent to the internal surface 50 and the locking member 44is adjacent to the internal surface 54.

FIG. 10 depicts a typical side view of the Haener interlocking fullblock 10A illustrating the parallel side 12 with the flat bottom surface22 and the interlocking members 44 and 64 extending above the topsurface 24. A beveled surface 20 extends along the side top edge 16 anddown the edge of the side wall 60.

FIG. 11 depicts a top plan view of the alternate embodiment of theHaener interlocking full block 10B without the beveled surface 20 on theupper side edges 16 and 18 or the ends 30 and 60.

FIG. 12 depicts a top plan view of the alternate embodiment of theinterlocking half block 100B without the beveled surface 20 on the upperside edges 116 and 118 of the parallel sides 112 and 114, or the ends 30and 60.

The interlocking block apparatus and method shown in the drawings anddescribed in detail herein, disclose arrangements of elements ofparticular construction and configuration for illustrating preferredembodiments of structure and method of operation of the presentinvention. It is to be understood, however, that elements of differentconstruction and configuration and other arrangements thereof, otherthan those illustrated and described may be employed for providing thedisclosed interlocking block device and method in accordance with thespirit of this invention, and such changes, alternations andmodifications as would occur to those skilled in the art are consideredto be within the scope of this invention as broadly defined in theappended claims.

Further, the purpose of the foregoing abstract is to enable the U.S.Patent and Trademark Office and the public generally, and especially thescientists, engineers and practitioners in the art who are not familiarwith patent or legal terms or phraseology, to determine quickly from acursory inspection the nature and essence of the technical disclosure ofthe application. The abstract is neither intended to define theinvention of the application, which is measured by the claims, nor is itintended to be limiting as to the scope of the invention in any way.

1. A two-block building system comprising: a first block having a topsurface, a bottom surface, two parallel sidewalls joined at a first endto an endwall, said sidewalls having distal ends opposite said firstend; said first block having a second wall extending between saidsidewalls adjacent to said distal ends; said first block having an openend cavity extending between said distal ends of said second wall; asecond block having a top surface, a bottom surface and two parallelsidewalls, said sidewalls attached at respective first ends to anendwall; a plurality of projections extending above said top surface ofsaid first block; a plurality of projections extending above said topsurface of said second block; and recesses communicating with saidbottom surfaces of said first and second blocks, said recessespositioned for an engagement with underlying of said projections fromany of said first and second blocks, stacked to form a wall.
 2. The twoblock building system of claim 1 additionally comprising: said secondblock having a length substantially one half the length of said firstblock.
 3. The two block building system of claim 1 additionallycomprising: each of said plurality of projections extending above saidrespective top surfaces having rectangular shape formed by four sidesurfaces; and each of said recesses extending below said respectivebottom surfaces having at least one engaging side surface positioned tocontact at least one respective of said side surfaces of saidprojection, whereby said projections in said engagement within saidrecesses provides means to align respective sidewalls of overlying ofsaid first and second blocks stacked in a wall, with underlying of saidfirst and second blocks stacked in said wall.
 4. The two block buildingsystem of claim 2 additionally comprising: each of said plurality ofprojections extending above said respective top surfaces havingrectangular shape formed by four side surfaces; and each of saidrecesses extending below said respective bottom surfaces having at leastone engaging side surface positioned to contact at least one respectiveof said side surfaces of said projection, whereby said projections insaid engagement within said recesses provides means to align respectivesidewalls of overlying of said first and second blocks stacked in awall, with underlying of said first and second blocks stacked in saidwall.
 5. The two block building system of claim 1 additionallycomprising: one of said sidewalls of each of said first blocks having aprojection extending along said distal end thereof; the other of saidsidewalls of each of said first blocks having a recess formed along saiddistal end thereof; one of said sidewalls of each of said second blockshaving a projection extending along said distal end thereof; the otherof said sidewalls of each of said second blocks having a recess formedalong said distal end thereof; said end wall of each of said firstblocks having a projection extending therefrom positioned in-line withsaid recess at said distal end of said sidewall thereof; said endwall ofeach of said first blocks having a recess formed therein, said recesspositioned in-line with said projection extending from said distal endof the other of said sidewalls of said first block; said endwall of eachof said second blocks having a projection extending therefrom positionedin line with said recess at said distal end of said sidewall thereof;said endwall of each of said second blocks having a recess formedtherein, said recess positioned in line with said projection extendingfrom the distal end sidewall of said second block; and whereby saidrespective projections and said recesses upon said distal ends and saidsidewalls of any one of said respective first or second blocks, engageswith mating of said recesses and said projections formed upon any firstor second block placed adjacent thereto.
 6. The two block buildingsystem of claim 2 additionally comprising: one of said sidewalls of eachof said first blocks having a projection extending along said distal endthereof; the other of said sidewalls of each of said first blocks havinga recess formed along said distal end thereof; one of said sidewalls ofeach of said second blocks having a projection extending along saiddistal end thereof; the other of said sidewalls of each of said secondblocks having a recess formed along said distal end thereof; said endwall of each of said first blocks having a projection extendingtherefrom positioned in-line with said recess at said distal end of saidsidewall thereof; said endwall of each of said first blocks having arecess formed therein positioned in-line with said projection extendingfrom said distal end of said sidewall thereof; said endwall of each ofsaid second blocks having a projection extending therefrom positioned inline with said recess at said distal end of said sidewall thereof; saidendwall of each of said second blocks having a recess formed therein,said recess positioned in-line with said projection extending from saiddistal end of sidewall thereof; and whereby said respective projectionsand said recesses upon said distal ends and said sidewalls, of any oneof said respective first or second blocks, engages with mating of saidrecesses and said projections formed upon any first or second blockwhich placed adjacent thereto in forming a wall.
 7. The two blockbuilding system of claim 3 additionally comprising: one of saidsidewalls of each of said first blocks having a projection extendingalong said distal end thereof; the other of said sidewalls of each ofsaid first blocks having a recess formed along said distal end thereof;one of said sidewalls of each of said second blocks having a projectionextending along said distal end thereof; the other of said sidewalls ofeach of said second blocks having a recess formed along said distal endthereof; said end wall of each of said first blocks having a projectionextending therefrom positioned in-line with said recess at said distalend of said sidewall thereof; said endwall of each of said first blockshaving a recess formed therein positioned in-line with said projectionextending from said distal end of said sidewall thereof; said endwall ofeach of said second blocks having a projection extending therefrompositioned in line with said recess at said distal end of said sidewallthereof; said endwall of each of said second blocks having a recessformed therein, said recess positioned in-line with said projectionextending from said distal end of sidewall thereof; and whereby saidrespective projections and said recesses upon said distal ends and saidsidewalls, of any one of said respective first or second blocks, engageswith mating of said recesses and said projections formed upon any firstor second block which placed adjacent thereto in forming a wall.
 8. Thetwo block building system of claim 4 additionally comprising: one ofsaid sidewalls of each of said first blocks having a projectionextending along said distal end thereof; the other of said sidewalls ofeach of said first blocks having a recess formed along said distal endthereof; one of said sidewalls of each of said second blocks having aprojection extending along said distal end thereof; the other of saidsidewalls of each of said second blocks having a recess formed alongsaid distal end thereof; said end wall of each of said first blockshaving a projection extending therefrom positioned in-line with saidrecess at said distal end of said sidewall thereof; said endwall of eachof said first blocks having a recess formed therein positioned in-linewith said projection extending from said distal end of said sidewallthereof; said endwall of each of said second blocks having a projectionextending therefrom positioned in line with said recess at said distalend of said sidewall thereof; said endwall of each of said second blockshaving a recess formed therein, said recess positioned in-line with saidprojection extending from said distal end of sidewall thereof; andwhereby said respective projections and said recesses upon said distalends and said sidewalls, of any one of said respective first or secondblocks, engages with mating of said recesses and said projections formedupon any first or second block which placed adjacent thereto in forminga wall.
 9. The two block building system of claim 1 additionallycomprising: said first block having a recess formed in a center portionof said second wall adjacent to said top surface; said first blockhaving a third wall extending between said sidewalls in between saidendwall and said second wall; said first block having a first cavitydefined by an area between said endwall, said sidewalls, and said secondwall; said first block having a second cavity defined by an area betweensecond wall, said sidewalls and said third wall; a central portion ofsaid endwall communicating with said top surface of said first blockbeing frangible; a center portion of said third wall communicating withsaid top surface being frangible; and whereby said center portion andsaid central portion when removed align with said recess thereby provinga horizontal path of communication through said first block, wherebyreinforcing bar or conduit may be communicated through said horizontalpath when said first blocks are adjacently engaged in a wall.
 10. Thetwo block building system of claim 1 additionally comprising: said firstblock having a recess formed in a center portion of said second walladjacent to said top surface; said first block having a third wallextending between said sidewalls in between said endwall and said secondwall; said first block having a first cavity defined by an area betweensaid endwall, said sidewalls, and said second wall; said first blockhaving a second cavity defined by an area between second wall, saidsidewalls and said third wall; a central portion of said endwallcommunicating with said top surface of said first block being frangible;a center portion of said third wall communicating with said top surfacebeing frangible; and whereby said center portion and said centralportion when removed align with said recess thereby proving a horizontalpath of communication through said first block, whereby reinforcing baror conduit may be communicated through said horizontal path when saidfirst blocks are adjacently engaged in a wall.
 11. The two blockbuilding system of claim 6 additionally comprising: said first blockhaving a recess formed in a center portion of said second wall adjacentto said top surface; said first block having a third wall extendingbetween said sidewalls in between said endwall and said second wall;said first block having a first cavity defined by an area between saidendwall, said sidewalls, and said second wall; said first block having asecond cavity defined by an area between second wall, said sidewalls andsaid third wall; a central portion of said endwall communicating withsaid top surface of said first block being frangible; a center portionof said third wall communicating with said top surface being frangible;and whereby said center portion and said central portion when removedalign with said recess thereby proving a horizontal path ofcommunication through said first block, whereby reinforcing bar orconduit may be communicated through said horizontal path when said firstblocks are adjacently engaged in a wall.
 12. The two block buildingsystem of claim 7 additionally comprising: said first block having arecess formed in a center portion of said second wall adjacent to saidtop surface; said first block having a third wall extending between saidsidewalls in between said endwall and said second wall; said first blockhaving a first cavity defined by an area between said end wall, saidsidewalls, and said third wall; said first block having a second cavitydefined by an area between second wall, said sidewalls and said thirdwall; a central portion of said endwall communicating with said topsurface of said first block being frangible; a center portion of saidthird wall communicating with said top surface being frangible; andwhereby said center portion and said central portion when removed alignwith said recess thereby proving a horizontal path of communicationthrough said first block, whereby reinforcing bar or conduit may becommunicated through said horizontal path when said first blocks areadjacently engaged in a wall.
 13. The two block building system of claim8 additionally comprising: said first block having a recess formed in acenter portion of said second wall adjacent to said top surface; saidfirst block having a third wall extending between said sidewalls inbetween said endwall and said second wall; said first block having afirst cavity defined by an area between said endwall, said sidewalls,and said second wall; said first block having a second cavity defined byan area between second wall, said sidewalls and said third wall; acentral portion of said endwall communicating with said top surface ofsaid first block being frangible; a center portion of said third wallcommunicating with said top surface being frangible; and whereby saidcenter portion and said central portion when removed align with saidrecess thereby proving a horizontal path of communication through saidfirst block, whereby reinforcing bar or conduit may be communicatedthrough said horizontal path when said first blocks are adjacentlyengaged in a wall.
 14. The two block building system of claim 5additionally comprising: said first block having a recess formed in acenter portion of said second wall adjacent to said top surface; saidfirst block having a third wall extending between said sidewalls inbetween said endwall and said second wall; said first block having afirst cavity defined by an area between said endwall, said sidewalls,and said second wall; said first block having a second cavity defined byan area between second wall, said sidewalls and said third wall; acentral portion of said endwall communicating with said top surface ofsaid first block being frangible; a center portion of said third wallcommunicating with said top surface being frangible; and whereby saidcenter portion and said central portion when removed align with saidrecess thereby proving a horizontal path of communication through saidfirst block, whereby reinforcing bar or conduit may be communicatedthrough said horizontal path when said first blocks are adjacentlyengaged in a wall.
 15. The two block building system of claim 3additionally comprising: a plurality of projections extending above saidtop surface of said first block being four; and said plurality ofprojections extending above said top surface of said second block beingtwo.
 16. The two block building system of claim 7 additionallycomprising: a plurality of projections extending above said top surfaceof said first block being four; and said plurality of projectionsextending above said top surface of said second block being two.
 17. Thetwo block building system of claim 12 additionally comprising: aplurality of projections extending above said top surface of said firstblock being four projections formed in two parallel pairs; and a firstof said parallel pairs extending from said second wall, each of saidfirst pair having one side surface adapted to contact an inner surfaceof a respective sidewall of an overlying first or second block formingsaid wall, each of said second pair having one side surface adapted tocontact an inner surface of a respective sidewall of an overlying firstor second block forming said wall, whereby overlying blocks engage withsaid projections of underlying blocks whether said overlying blocks areparralel or normal to said underlying blocks.
 18. The two block buildingsystem of claim 4 additionally comprising: a plurality of projectionsextending above said top surface of said first block being fourprojections formed in two parallel pairs; and a first of said parallelpairs extending from said second wall, each of said first pair havingone side surface adapted to contact an inner surface of a respectivesidewall of an overlying first or second block forming said wall, eachof said second pair having one side surface adapted to contact an innersurface of a respective sidewall of an overlying first or second blockforming said wall.
 19. The two block building system of claim 8additionally comprising: a plurality of projections extending above saidtop surface of said first block being four projections formed in twoparallel pairs; and a first of said parallel pairs extending from saidsecond wall, each of said first pair having one side surface adapted tocontact an inner surface of a respective sidewall of an overlying firstor second block forming said wall, each of said second pair having oneside surface adapted to contact an inner surface of a respectivesidewall of an overlying first or second block forming said wall. 20.The two block building system of claim 13 additionally comprising: aplurality of projections extending above said top surface of said firstblock being four projections formed in two parallel pairs; and a firstof said parallel pairs extending from said second wall, each of saidfirst pair having one side surface adapted to contact an inner surfaceof a respective sidewall of an overlying first or second block formingsaid wall, each of said second pair having one side surface adapted tocontact an inner surface of a respective sidewall of an overlying firstor second block forming said wall, whereby overlying blocks engage withsaid projections of underlying blocks whether said overlying blocks areparralel or normal to said underlying blocks.
 21. The two block buildingsystem of claim 19 additionally comprising: said first block having aledge extending from said second wall into said second cavity of saidfirst block; and said ledge having a width dimension adapted to engageinterior side surfaces formed on said first or second parallel pairs ofprojections of underlying first blocks in a wall formed of stacked firstblocks.
 22. The two block building system of claim 20 additionallycomprising: said first block having a ledge extending from said secondwall into said second cavity of said first block; and said ledge havinga width dimension adapted to engage interior side surfaces formed onsaid first or second parallel pairs of projections of underlying firstblocks in a wall formed of stacked first blocks.
 23. The two blockbuilding system of claim 4 additionally comprising: a plurality ofprojections extending above said top surface of said first block beingfour projections formed in two parallel pairs; and a first of saidparallel pairs extending from said second wall, each of said first pairhaving one side surface adapted to contact an inner surface of arespective sidewall of an overlying first or second block forming saidwall, each of said second pair having one side surface adapted tocontact an inner surface of a respective sidewall of an overlying firstor second block forming said wall.
 24. The two-block building system ofclaim 1 additionally comprising: said two sidewalls of said first blockhaving exterior surfaces with one of said exterior surfaces beingtextured and the other of said exterior surfaces being smooth; said twosidewalls of said second block having exterior surfaces with one of saidexterior surfaces being textured and the other of said exterior surfacesbeing smooth; and whereby a side surface of a wall built with said firstor second blocks may have a textured or smooth surface by rotation ofsaid first and second blocks.
 25. The two-block building system of claim1 additionally comprising: said two sidewalls of said first block havingexterior surfaces with one of said exterior surfaces being textured andthe other of said exterior surfaces being smooth; said two sidewalls ofsaid second block having exterior surfaces with one of said exteriorsurfaces being textured and the other of said exterior surfaces beingsmooth; and whereby a side surface of a wall built with said first orsecond blocks may have a textured or smooth surface by rotation of saidfirst and second blocks.
 26. The two-block building system of claim 7additionally comprising: said two sidewalls of said first block havingexterior surfaces with one of said exterior surfaces being textured andthe other of said exterior surfaces being smooth; said two sidewalls ofsaid second block having exterior surfaces with one of said exteriorsurfaces being textured and the other of said exterior surfaces beingsmooth; and whereby a side surface of a wall built with said first orsecond blocks may have a textured or smooth surface by rotation of saidfirst and second blocks.
 27. The two-block building system of claim 8additionally comprising: said two sidewalls of said first block havingexterior surfaces with one of said exterior surfaces being textured andthe other of said exterior surfaces being smooth; said two sidewalls ofsaid second block having exterior surfaces with one of said exteriorsurfaces being textured and the other of said exterior surfaces beingsmooth; and whereby a side surface of a wall built with said first orsecond blocks may have a textured or smooth surface by rotation of saidfirst and second blocks.